Add Repository model to proxy request to Gitlab::Git::Repositoty and decorate commits with Commit model

Use existing methods for branch names: Ex use @repository.branch_names instead of @repository.heads.map(&:name)

Update deps for therubyracer and libv8 resolve build issues on FreeBSD...

Display note count on network graph.

New issue button was not follows to external tracker if it is selected. ...

Fix RoutingError when changing username to non ascii char.

Changed the word 'authentification' to 'authentication'

fix typo: shure -> sure

Fixed UsersProject.in_projects

Fixed: gitlab-shell version check error message

Removing duplication by putting everything in the readme. Allow us to close issues that deviate from the guidelines.